EDIT: There aren't any specific moves you need to use. "Finish It!" means to attack the opponent.

EDIT2: I would suggest using Quick Attack, and if Mandibuzz switches out, use Quick Attack, but if Zoroark is switched out, use Endure. Then Reversal. If Lucario #1 faints, then use Fury Cutter. Keep using Fury Cutter. If the Lucarios are the other way around, use Fury Cutter! It's a great move for the set. ;)
[1]: http://www.serebii.net/black2white2/pokestar/brycenman.shtml